I defrosted and tried it again but still the same. I pulled it out and ordered a new one for tomorrow. I do not think it was that old. I have a freezer in the garage that is 25+ years and still running well, just shows you.
Thanks for replying. The freezer does frost and the larder part is frost free. The thermostat is part of the temperature control/light unit in the larder part. Are you saying that a freezer defrost and new thermostat would cure the problem or is it kaput?